diff --git a/configure.in b/configure.in
index 35663dbe39..1ce40e84bb 100644
--- a/configure.in
+++ b/configure.in
@@ -7425,6 +7425,7 @@ AC_SUBST(EXTRALIBS_MEDIA)
 AC_SUBST(EXTRALIBS_GUI)
 AC_SUBST(EXTRALIBS_OPENGL)
 AC_SUBST(EXTRALIBS_SDL)
+AC_SUBST(EXTRALIBS_STC)
 AC_SUBST(WITH_PLUGIN_SDL)
 AC_SUBST(EXTRALIBS_GTKPRINT)
 AC_SUBST(EXTRALIBS_GNOMEPRINT)